Common UC 6 - Performing shop maintenance

SELF CHECK 6.3

READ THE INSTUCTION CAREFULLY; The answers are provided for each of the
following questions. Select the best answer.

1. Caused by inadequate machine guards, unsafe workplace conditions, and
unsafe work practices.
a. Physical hazards
b. Ergonomic hazards
c. Biological hazards
d. Safety hazards

2. Caused by organisms such as viruses, bacteria, fungi and parasites.

a. Safety hazards
b. Chemical hazards
c. Biological hazards
d. Ergonomic hazards
3. Caused by noise, vibration, energy, weather, heat, cold, electricity, radiation
and pressure.

e. Psychosocial hazards
f. Physical hazards
g. Chemical hazards
h. Safety hazards

4. That can affect mental health or well-being such as overwork, stress,
bullying, or violence.

a. Psychosocial hazards
b. Physical hazards
c. Ergonomic hazards
d. Biological hazards

5. Caused by physiological and psychological demands on the worker, such as
repetitive and forceful movements, awkward postures arising from improper
work methods, and improperly designed workstations, tools, and equipment.

a. Ergonomic hazards
b. Psychosocial hazards
c. Physical hazards
d. Biological hazards

CBLM Date Developed: Document No. DRV-PTC-32-
Driving NC II March 2018 002-20
Date Revised: Issued by:
Performing Shop June 2020
Maintenance Developed by: TESDA,PTC-
Kalinga
LEA LIBERTY A.
WANGAG Revision # 01 P a g e | 51

ANSWER KEY LO 6.3

1. D
2. C
3. B
4. A
5. A

CBLM Date Developed: Document No. DRV-PTC-32-
Driving NC II March 2018 002-20
Date Revised: Issued by:
Performing Shop June 2020
Maintenance Developed by: TESDA,PTC-
Kalinga
LEA LIBERTY A.
WANGAG Revision # 01 P a g e | 52

Information sheet 6.4

Report damaged tools/ equipment

LEARNING OBJECTIVES: AFTER READING THIS INFORMATION SHEET

THE TRAINEES MUST BE ABLE TO.

1. Complete inventory of tools and equipment is maintained.
2. Damaged tools/ equipment are identified with repair

recommendation.
3. Reports prepared on damaged tools/ equipment have no error/

discrepancy.

KEY POINTS:

 Housekeeping can help prevent injuries and improve productivity.
 Every worker should play a role in housekeeping, even if that means

keeping his or her own workspace clean.
 Housekeeping, should be an ongoing process, not a onetime practice.

All tools, equipment, and vehicles must be properly maintained so that
workers are not endangered. Construction regulations require inspections of
vehicles, tools, machines, and equipment before use.
Preventive maintenance is the systematic care and protection of tools,
equipment, machines, and vehicles in order to keep them in a safe, usable
condition that limits downtime and extends productivity. We must always be
aware that maintenance tasks themselves are potentially hazardous and can
result in injury. The successful maintenance program is:

 well organized and scheduled

 controls hazards

 defines operational procedures

 trains key personnel.

CBLM Date Developed: Document No. DRV-PTC-32-
Driving NC II March 2018 002-20
Date Revised: Issued by:
Performing Shop June 2020
Maintenance Developed by: TESDA,PTC-
Kalinga
LEA LIBERTY A.
WANGAG Revision # 01 P a g e | 53

The degree of detail to include in your company's program regarding
equipment maintenance will depend on the kinds of tools/equipment used.
Some construction equipment (e.g., cranes) have very specific inspection
and maintenance requirements. Mobile heavy equipment (dozers, loaders,
scrapers, etc.) may have different maintenance requirements. Passenger
vehicles (company trucks, cars, and vans) may require only basic
maintenance. Power tools should be maintained in good working order. This
may be limited to ensuring that blades/bits are replaced when needed and
that guards or other safety devices are operable and any damaged electrical
cords/plugs are repaired or replaced. Damaged or defective equipment/tools
should be tagged and removed from service.
Most manufacturers can provide maintenance schedules for their
equipment. Large companies with a fleet of vehicles/equipment typically
have a comprehensive maintenance program due to the capital investment
and/or leasing agreements. Smaller companies may lease equipment and
maintenance services may be included in the leasing agreement.

Requirements

General requirements for equipment maintenance include:

 Obtaining a copy of the maintenance schedule recommended by the
manufacturer.

 Ensuring that maintenance is performed as required.

 Ensuring that the person(s) performing the maintenance are competent
(e.g. licensed mechanic).

 Retaining records of maintenance/service conducted.

 Specifying who is responsible for overseeing equipment maintenance
and where the records are kept.

 Setting up a system for removal and tagging of damaged or defective
tools and equipment.

CBLM Date Developed: Document No. DRV-PTC-32-
Driving NC II March 2018 002-20
Date Revised: Issued by:
Performing Shop June 2020
Maintenance Developed by: TESDA,PTC-
Kalinga
LEA LIBERTY A.
WANGAG Revision # 01 P a g e | 54

Powered Hand Tools - Electric Tools - Basic Safety

When and how should you inspect powered hand tools?

 Inspect tools for any damage prior to each use.
 Check the handle and body casing of the tool for cracks or other

damage.
 If the tool has auxiliary or double handles, check to see that they

installed securely.
 Inspect cords for defects: check the power cord for cracking,

fraying, and other signs of wear or faults in the cord insulation.
 Check for damaged switches and ones with faulty trigger locks.
 Inspect the plug for cracks and for missing, loose or faulty prongs.

What should you do before using powered hand
tools?

 Ensure that you have been properly trained to use the tool safely.
Read the operator's manual before using the tool and operate the
tool according to the manufacturer's instructions. Use only tested
and approved tools.

 Ensure that the power tool has the correct guard, shield or other
attachment that the manufacturer recommends.

 Prevent shocks. Ensure that the tools are properly grounded using
a three-prong plug, are double-insulated (and are labelled as such),
or are powered by a low-voltage isolation transformer: this will
protect users from an electrical shock.

 Check electric tools to ensure that a tool with a 3-prong plug has
an approved 3-wire cord and is grounded. The three-prong plug
should be plugged in a properly grounded 3-pole outlet. If an
adapter must be used to accommodate a two-hole receptacle, the
adapter wire must be attached to a known, functioning ground.
NEVER remove the third, grounding prong from a plug.

CBLM Date Developed: Document No. DRV-PTC-32-
Driving NC II March 2018 002-20
Date Revised: Issued by:
Performing Shop June 2020
Maintenance Developed by: TESDA,PTC-
Kalinga
LEA LIBERTY A.
WANGAG Revision # 01 P a g e | 55

 Replace open front plugs with dead front plugs. Dead front plugs
are sealed and present less danger of shock or short circuit.

 Have a qualified electrician install a polarized outlet if the

polarized, two-prong plug of a double-insulated tool does not fit in
a two-hole receptacle. Double insulated tools use plugs having one

prong that is visibly wider than the other.
 Test all tools for effective grounding with a continuity tester or a

ground fault circuit interrupter (GFCI) before use.

 Use only the kind of battery that the tool manufacturer specifies for
the battery-powered tool that you are using.

 Recharge a battery-powered tool only with a charger that is
specifically intended for the battery in that tool.

 Remove the battery from the tool or ensure that the tool is switched
off or locked off before changing accessories, making adjustments,
or storing the tool.

 Store a battery pack safely so that no metal parts, nails, screws,
wrenches and so on can come in contact with the battery

terminals; this could result in shorting the battery and possibly
cause sparks, fires or burns.

What should you do while using powered hand
tools?

 Wear or use personal protective equipment (PPE) or clothing that is

appropriate for the work you are doing; this may include items
such as safety glasses or goggles, or a face shield (with safety
glasses or goggles), hearing protection, dust mask, gloves, safety
boots or shoes, or rubber boots.
 Switch off the tools before connecting them to a power supply.
 If a power cord feels more than comfortably warm or if a tool is
sparking, have it checked by an electrician or other qualified
person.
 Disconnect the power supply before making adjustments or
changing accessories.
 Remove any wrenches and adjusting tools before turning on a tool.

CBLM Date Developed: Document No. DRV-PTC-32-
Driving NC II March 2018 002-20
Date Revised: Issued by:
Performing Shop June 2020
Maintenance Developed by: TESDA,PTC-
Kalinga
LEA LIBERTY A.
WANGAG Revision # 01 P a g e | 56

 Inspect the cord for fraying or damage before each use. Tag
defective tools clearly with an "Out of service" tag and replace

immediately with a tool in good running order.
 During use, keep power cords clear of tools and the path that the

tool will take.
 Use clamps, a vice or other devices to hold and support the piece

being worked on, when practical to do so. This will allow you to use
both hands for better control of the tool and will help prevent
injuries if a tool jams or binds in a work piece.

 Use only approved extension cords that have the proper wire size
(gauge) for the length of cord and power requirements of the

electric tool that you are using. This will prevent the cord from
overheating.

 For outdoor work, use outdoor extension cords marked "W-A" or
"W".

 Suspend power cords over aisles or work areas to eliminate

stumbling or tripping hazards.
 Eliminate octopus connections: if more than one receptacle plug is

needed, use a power bar or power distribution strip that has an
integral power cord and a built-in overcurrent protection.

 Pull the plug, not the cord when unplugging a tool. Pulling the cord
causes wear and may adversely affect the wiring to the plug and
cause electrical shock to the operator.

 Follow good housekeeping procedures – keep the work area free of
clutter and debris that could be tripping or slipping hazards.

 Keep power cords away from heat, water, oil, sharp edges and
moving parts. They can damage the insulation and cause a shock.

 Ensure that cutting tools, drill bits, etc. are kept sharp, clean and
well maintained.

 Store tools in a dry, secure location when they are not being used.

What should you avoid when using powered
tools?

 Do not wear gloves, loose clothing or jewelry while using revolving
power tools. Tie back long hair or wear appropriate hair protection
to prevent hair from getting caught in moving parts of equipment.

 Do not use a tool unless you have been trained to use it safely and
know its limitations and hazards.

 Avoid accidental starting by ensuring the tool is turned off before
you plug it in. Also do not walk around with a plugged-in tool with
your finger touching the switch.

CBLM Date Developed: Document No. DRV-PTC-32-
Driving NC II March 2018 002-20
Date Revised: Issued by:
Performing Shop June 2020
Maintenance Developed by: TESDA,PTC-
Kalinga
LEA LIBERTY A.
WANGAG Revision # 01 P a g e | 57

 Do not bypass the ON/OFF switch and operate the tools by
connecting and disconnecting the power cord.

 Do not disconnect the power supply of the tool by pulling or jerking
the cord from the outlet.

 Do not leave a running tool unattended. Do not leave it until it has
been turned off, has stopped running completely, and has been

unplugged.
 Do not use electric tools in wet conditions or damp locations unless

tool is connected to a ground fault circuit interrupter (GFCI).

 Do not expose electric power tools to rain or wet conditions; wet
tools increase the likelihood of electric shock.

 Avoid body contact with grounded surfaces like refrigerators, pipes
and radiators when using electric powered tools; this will reduce

the likelihood of shock if the operator's body is grounded.
 Do not plug several power cords into one outlet by using single-to-

multiple outlet adapters or converters ("cube taps").

 Do not use light duty power cords.
 Stop using an electric power tool if you feel a tingle in your fingers.

This is a warning that the tool is faulty and needs repair.
 Do not connect or splice extension cords together to make a longer

connection: the resulting extension cord may not be able to provide
sufficient current or power safely.
 Do not carry electrical tools by the power cord.

 Do not tie power cords in knots. Knots can cause short circuits and
shocks. Loop the cords or use a twist lock plug.

 Never break off the third prong on a plug: replace broken 3-prong
plugs and make sure the third prong is properly grounded.

 Never use extension cords as permanent wiring: use extension

cords only as a temporary power supply to an area that does not
have a power outlet.

 Do not walk on or allow vehicles or other moving equipment to
pass over unprotected power cords. Cords should be put in

conduits or protected by placing planks on each side of them.

CBLM Date Developed: Document No. DRV-PTC-32-
Driving NC II March 2018 002-20
Date Revised: Issued by:
Performing Shop June 2020
Maintenance Developed by: TESDA,PTC-
Kalinga
LEA LIBERTY A.
WANGAG Revision # 01 P a g e | 58

 Do not brush away sawdust, shavings or turnings while the tool is
running. Never use compressed air for cleaning surfaces or
removing sawdust, metal turnings, etc.

 Do not operate tools in an area containing explosive vapours or
gases.

 Do not clean tools with flammable or toxic solvents.
 Do not surprise or touch anyone who is operating a tool. Startling a

tool operator could end up causing an accident or injury.

REFERENCE:
https://www.ccohs.ca/oshanswers/safety_haz/power_tools/saf_elec.html

CBLM Date Developed: Document No. DRV-PTC-32-
Driving NC II March 2018 002-20
Date Revised: Issued by:
Performing Shop June 2020
Maintenance Developed by: TESDA,PTC-
Kalinga
LEA LIBERTY A.
WANGAG Revision # 01 P a g e | 59

Self-check 6.4

INSTRUCTION: Write the steps on when and how you should inspect
powered hand tools.

CBLM Date Developed: Document No. DRV-PTC-32-
Driving NC II March 2018 002-20
Date Revised: Issued by:
Performing Shop June 2020
Maintenance Developed by: TESDA,PTC-
Kalinga
LEA LIBERTY A.
WANGAG Revision # 01 P a g e | 60

ANSWER KEY 6.4

 Inspect tools for any damage prior to each use.
 Check the handle and body casing of the tool for cracks or other

damage.
 If the tool has auxiliary or double handles, check to see that they

installed securely.
 Inspect cords for defects: check the power cord for cracking,

fraying, and other signs of wear or faults in the cord insulation.
 Check for damaged switches and ones with faulty trigger locks.
 Inspect the plug for cracks and for missing, loose or faulty prongs.

CBLM Date Developed: Document No. DRV-PTC-32-
Driving NC II March 2018 002-20
Date Revised: Issued by:
Performing Shop June 2020
Maintenance Developed by: TESDA,PTC-
Kalinga
LEA LIBERTY A.
WANGAG Revision # 01 P a g e | 61

Task Sheet 6.4

Title: Report damaged tools/ equipment

Performance Objectives: Identify the steps on when and how you
should inspect powered hand tools.

Materials/Equipment: CBLM, paper and pen

Steps / Procedure:

1. Inspect tools for any damage prior to each
use.

2. Check the handle and body casing of the

tool for cracks or other damage.
3. Check if the tool has auxiliary or double

handles, check to see that they installed
securely.

4. Inspect cords for defects: check the power
cord for cracking, fraying, and other signs
of wear or faults in the cord insulation.

5. Check for damaged switches and ones
with faulty trigger locks.

6. Inspect the plug for cracks and for
missing, loose or faulty prongs.

Assessment Method: Questioning/Interview

CBLM Date Developed: Document No. DRV-PTC-32-
Driving NC II March 2018 002-20
Date Revised: Issued by:
Performing Shop June 2020
Maintenance Developed by: TESDA,PTC-
Kalinga
LEA LIBERTY A.
WANGAG Revision # 01 P a g e | 62

PERFORMANCE CRITERIA CHECKLIST LO6.4

CRITERIA YES NO

Did you . . . 

1. Inspect tools for any damage prior to each 
use?

2. Check the handle and body casing of the tool 
for cracks or other damage?

3. Check if the tool has auxiliary or double
handles, check to see that they installed securely?

4. Inspect cords for defects: check the power
cord for cracking, fraying, and other signs of wear or
faults in the cord insulation?

5. Check for damaged switches and ones with
faulty trigger locks?

6. Inspect the plug for cracks and for missing,
loose or faulty prongs?

CBLM Date Developed: Document No. DRV-PTC-32-
Driving NC II March 2018 002-20
Date Revised: Issued by:
Performing Shop June 2020
Maintenance Developed by: TESDA,PTC-
Kalinga
LEA LIBERTY A.
WANGAG Revision # 01 P a g e | 63